Trim and miter gauge for saw tables



Dec. 26, 1950 w. R. CURTIS 2,535,843

TRIM AND MITER GAUGE FOR SAW TABLES Filed June 29, 194B 2 Sheets-Sheet l i&

INV NTOR,

ATTD RN EYS Dec. 26, 1950 w, cu s 2,535,843

TRIM AND MITER GAUGE FOR SAW TABLES Filed June 29, 1948 '2 Sheets-Sheet 2 ia 114 Zar M62w%a A'ITD RN EYIE Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE TRIM AND MITEB GAUGE FOR SAW TABLES Wilbur a. Curtis, Fresno, Calif. Application June 29, 1948, Serial N 0. 35,832

I Claims.

This invention relates to a trim and miter gauge for power driven saws.

It is an object of the present invention to provide a trim and miter gauge for power driven saws which can be fitted to the saw table in grooves therein and adjusted through these grooves to effect the cut of the wood piece and wherein an arm is adjustable to position the Wood piece at an angle to receive a bias cut and wherein means is provided for holding the angle arm in its adjusted position and for retaining the wood piece fixed to the gauge, the clamp for retaining the wood piece being easily removable when not desired.

Other objects of the present invention are to provide a trim and miter gauge for power driven saws, which is of simple construction, easy to move across the saw table, easy to adjust for different angles, rigid, requires minimum parts, convenient to use, inexpensive to manufacture, and efiicient in operation.

For other objects, and for a better understanding of the invention, reference may be had to the following detailed description taken in con nection with the accompanying drawing, in Which,

Fig. 1 is a top plan view of a power driven saw and of the trim and miter gauge embodying the features of the present invention.

Fig. 2 is a side elevational View of the saw and of the gauge,

Fig. 3 is a top plan view of the miter arm detached from the gauge frame,

Fig. 4 is a fragmentary side elevational View of the arm,

Fig. 5 is a fragmentary side elevational View of the arm with a portion broken away and the arm and the clamp for retaining the arm in its adjusted position on the arcuate support being shown in section,

Fig. 6 is a fragmentary sectional view, in elevation, taken On line 5--6 of Fig. 1.

Figs. 7 and 8 are respectively sectional views taken on lines 7-? and ii-8 of Fig. 2.

Referring now to the figures, It represents a power driven saw having the usual controls H and i2 and fiat top i3 with an opening i i therein upwardly through which is projected a rotary saw blade [5 fixed to its driving arbor it having pulley ll. The top It! has parallel grooves 58 and is disposed respectively at opposite sides of the saw 55 and serving to receive respectively guides 2i and 22. The guide 2! is of T-secticn in order to prevent the upward removal of the guide 25 from the top i3.

2 The ends of each guide 2| and 22 are turne upwardly to receive parallel frame members 23 and 24 each having vertically-extending holes 25 and 2i to receive these upwardly bent ends. The ends on the guide member it are indicated at 28. ihe end on the guide member 22 is indicated at 29. The slot 2? in each frame member 23 and 2 3 is of greater length than the slot 25 in order that the guide members can be adjusted for different variations in distances between slots i3 and I 9 in the saw tops. Between the frame pieces 23 and it, is a transverse member 3i adapted to ride on rollers 32 on the side of the fiat top l3.

Also extending between the frame pieces 23 and 24' is an arcuate scale 33 and a brace i on which the work pieces may be rested as the saw cutting operation is effected.

The arm 23 is formed of metal and inciudes vertically-extending portions 35 and 35 having respectively recesses 3i and 38 for receiving hinge portion 39, Figs. 3 and 4, of a metal part ii of a miter arm 32. A pin 43 will retain the hinge portion as in either one of the recesses 37 and 38, the different locations for the miter arm being illustrated in phantom in Fig. 1. The verticallyextending portions 35 and 33 are connected together at their upper ends by a connecting portion til sufficiently elevated to permit the saw [5 to pass beneath it as the gauge is adjusted over the saw top 53. The piece 23 has an extension 45 which is sufiiciently long to receive the brace 3d. The frame piece 2 3' is constructed similarly to frame piece 23 but is without the recesses. This piece 26 has vertically-extending portions id and ll and an elevated connecting portion t8.

Between the connecting portions id and d8 of the respective pieces there can be secured a clamp rod iii having depending hook formations 521 and 53 adapted to fit under the respective portions it' and d8. A set screw 54 is provided at each end of the clamping member 51 for the securement of the member to a connecting portion. Adjustable on the clamping member 5! is a slide 55 having a clamping screw 56 adapted to engage with the work piece and secure the same to the guides 21 and 22 so that a warped portion of a work piece will be held in the position to which it has been angled and will be pressed flat and true across the saw table whereby upon cutting a rabbet or dado a uniform depth 0 cut will be effected. The miter arm can be retained upon the arouate scale 33 by an angle clamp 58 (Figures 2 and 5) held by a screw 59 against the scale 33 on the upper side of which engages a wear plate 6i secured by screws se to the bottom of the miter arm. This screw se is loosened when it is desired to adjust the arm.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

What is claimed is:

l. A trim and miter gauge for a rotary saw comprising parallel members adapted to fit parallel grooves in a table top of a rotary saw machine, frame pieces extending transversely of the parallel members and connected to the same, at least one of said frame pieces being formed to permit the passage of the rotary saw between the ends of said frame piece, a scale extending between the frame pieces, a miter arm pivotally connected to one of the frame pieces and adjustable over the scale, and releasable means for fixing the miter arm to the scale.

2. A trim and miter gauge for rotary saw comprising parallel guides adapted to fit recesses on the rotary saw table top and slidable therein, each of said guide members upwardly at their opposite ends, frame pieces having vertically-extending portions with vertically-extending openings receivingthe upwardly 'bent ends of the guides, a connecting portion extending between the upper ends of the vertical portions of each frame piece and sufficiently elevated to pass over the rotary saw, said frame pieces having extensions to one side, braces extending between the frame piece laterally removed from the guides, a scale on one of the braces, a miter arm pivotally connected to one of the vertically-extending portions of one of the frame pieces and adapted to be adjusted over the scale, and means for fixing the miter arm to one of the braces in its angularly adjusted position.

3. A trim and miter gauge for a rotar saw comprising parallel guides adapted to fit recesses on the rotary saw table top and slidable therein, each of said guide members bent upwardly at their opposite ends, frame pieces having vertically-extending portions with vertically-extending openings receiving the upwardly bent ends of the guides, a connecting portion extending between the upper ends of the vertical portions of each frame piece and sufficiently elevated to pass over the rotary saw, said frame pieces having extensions to one side, braces extending between the frame pieces laterally removed from the guides, a scale on one of the braces, a miter arm pivotally connected to one of the verticallyextending portions of one of the frame pieces and adapted to be adjusted over the scale, and means for fixing the minor arm to one of the braces in its angularly adjusted position, and the frame piece to which the miter arm is pivotally connected having a formation on its other verticallyextending portion for receiving the miter arm, whereby the miter arm can be selectively connected to different locations on the frame piece.

i. A trim and miter gauge as defined in claim 2 and a clamp rod having formations on the opposite ends of the same for the releasable connection of the clamping rod with the respective connecting portions of the frame pieces, a slide on the clamping rod, a clamping screw adjustable in the slide and adapted to engage a work piece to secure the work piece in its adjusted position on the guides.

5. A trim and miter gauge as defined in claim 2, in which rollers are journaled to a side of the rotary saw table top and one of said braces is mounted to ride on said rollers.

WILBUR R. CURTIS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 271,408 Brennan Jan. 30, 1883 1,452,233 Zsuffa Apr. 17, 1923 1,662,688 Hill Mar. 13, 1928 1,394,010 Tautz Jan. 10, 1933 2,085,235 Tautz June 29, 1937 

